Stud attachment for rimless eyeglasses or spectacles.



Patented Dec. I0, I901.

c. MERRY. STUD ATTACHMENT FOR'BIILESS EYEGLASSES 0R SPECTAULES.

A l mim' and July 1, 1901.

. ("0 Model.)

. fru/e zztort UNITED STATES PATENT OFFICE.

CHARLES L. MERRY, OF KANSAS CITY, MISSOURI.

STUII ATTACHMENT FOR RIMLESS EYEGLASSES OR SPECTACLES.

SPECIFICATION forming part of Letters Patent No. 688,428, dated December0, 190

Application filed July 1, 1901. Serial'No. 66,674. (No model.)

- and use the same, reference being had to the accompanying drawings,forming a part of this specification.

The objects of my invention are, first, to afford an accurateconjunction of the stud and lens, and, second, to obviate breaking ofthe lens from undue expansion of the connecting parts.

The invention consists in the novel construction and combination ofparts, such as will be first fully described, and specifically pointedout in the claims.

In the drawings, Figure l is a front view of a pair of rimlesseyeglasses or lenses, showing the studs and the lens-holding members orplates secured to the lenses, one of which is broken away to show theinvention. Fig. 2 is an enlarged detail plan view of the improved stud.Fig. 3 is a detail side view of the improved stud, with one of thelens-holding members or plates broken away to show the intermediatewedge on the stud to engage with the notched lens. Fig. 4 is a detailbroken portion of the eyeglass to show the nick and packing.

Similar letters of reference indicate corresponding parts in all thefigures of the drawings.

Referring to the drawings, A' A represent a pair of rimless eyeglasses.

B represents the arched or curved nosestrips, and C represents the stud.The stud Oat the outer end a is rectangular in shape and is grooved in avertical direction at c to receive the free end of the nose-strip B, inwhich groove the said free end is secured by the small screw 0 Extendingin an opposite direction to the grooved parts and from the other end ofthe stud are lens-holding members or plates '0 0 which are fiat upon theinner side and arranged the proper distance apart to extend upon eachside of the lens A and are perforated transversely at 0 These plates areordinarily short in length and the outer ends of which at c are curvedin the arcs of circles.

In the details of my invention a wedge D on the stud O' is made betweenits lens-holding plates 0 c a short distance outwardly fromthe stud andextending laterally to and connected with the inner sides of plates 0 0The upper and. lower surfaces or faces (1 d of the Wedge D, which are atright angles to the plates 0 0 are inclined from the stud G toward eachother and meet at a point, thus forming a wedge for the purposehereinafter explained.

In the edge of the eyeglass A and at the end of said glass to which theattachment of the stud is made and in the line of the axis of itsgreater length is a nick at, extending transversely to the lens, whichis V-shaped, the sides of which V shaped depression are slightly widerapart than the thickness of the wedge D through the inclined sides 01 d.In the V-shaped depression or nick a in the lens is a packing E,composed of yielding material, such as soft lead or rubber or othersuitable material,which fits snugly against the opposite sides of thenick a. As thus prepared the lens A is then inserted between the plates0 c of the stud with the nick a toward the,

projection D, the sides at d of which wedge extend within the nickagainst the packing E, and so fit snugly therein. A small screw 0 isthen extended through the perforations o in the plates 0 which passesthrough the lens A and in the threaded perforation of the oppositeplate, and the connection is firm and unyielding.

I am aware that stud attachments for lenses have been constructed withmembers one bearing on each face ofthe lens and with a projectionbetween these members engaging with a cut or nick in the edge of thelens. I am also aware that a cushion has been applied between theordinary stud and lens and also between the lens-holding members and thelens to protect the screws from contact with the lens. I am not aware ofany invention hitherto which devises means for the accurate fitting of aprojectionupon the stud and the nick in the lens. While the packingobviates the breaking of the lens, an oculist experiences muchdifiiculty in fitting the projection within the nick and at the sametime securing the members of the stud to the lens. It is obvious inmaking an accurate conjunction of the wedge on the stud with the nickthat the nick may be other than V-shaped. The nick being larger than thewedge, the fitting parts of the wedge upon the soft packing willdisplace the packing to accommodate itself to the variances in the widthof the nick.

Such modifications may be employed as are within the scope of theinvent-ion.

Theimprovementis applicable to spectacles as well as to eyeglasses andaffords an eflicient and expeditious adjustment.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The combination with a rimless lens of a stud,lens-l1olding members orplates one bearing on each face of the lens, a fastening deviceextending through the outer ends of said plates and said lens, a wedgeon said stud intermediate said lens-holding plates, said lens having anick in its edge of an increased width to that of the said wedge andmeans for obtaining an accurate conjunction of said wedge and nickcomprising a soft packing on the inner surfaces of the said nick inwhich the wedge is fitted.

In testimony whereof I have signed my name to this specification in thepresence of the two subscribing witnesses.

CHARLES L. MERRY.

\Vitnesses:

FRANCIS A. LEAGH, THEODORE O. SPARKS.

